Preparation and characterization of polydimethylsiloxatie/poly(vinylalcohol) coated solid phase microextraction fibers using sol-gel technology

被引：48

作者：

Lopes, AL ^{[1
]}

Augusto, F ^{[1
]}

机构：

[1] Univ Estadual Campinas, Inst Chem, BR-13084970 Campinas, SP, Brazil

来源：

JOURNAL OF CHROMATOGRAPHY A | 2004年 / 1056卷 / 1-2期

关键词：

sol-gel technology; solid-phase microextraction; polydimethylsiloxane; poly(vinyl alcohol); polychlorinated biphenyls;

D O I：

10.1016/j.chroma.2004.05.047

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

The applicability of a composite composed of polydimethylsiloxane (PDMS) and poly(vinyl alcohol) (PDMS/PVA) as coating sorbent for SPME fibers is demonstrated here. Fused silica (FS) fibers were coated with PDMS/PVA composite through a sol-gel process, using methyltrimethoxysilane as reticulating agent. The chemical and physical properties of the sol-gel PDMS/PVA composite were determined by infrared spectroscopy and thermogravimetric analysis. Electron scanning microscopy of the prepared fibers, showed that the coating obtained was highly microporous, having a thickness of approximately 5 mum. The fibers were tested for the headspace extraction of several organic compounds (o-xylene, naphthalene, ethyl caprate, p-chlorotoluene and PCB) prior to gas chromatographic analysis. The extractive capacity of the PDMS/PVA coating was found to be superior to that of pure conventional PDMS fibers. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：13 / 19

页数：7

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